1 |© 2006 Citrix Systems, Inc.—All rights reserved.

CoxCONNECT Case Study:

Universal Access supported by a fully redundant infrastructure spanning multiple data centers

Keith Hubbard

Sr. Server Administrator

Chuck Coffman

Sr. Server Administrator

2 | © 2006 Citrix Systems, Inc.—All rights reserved.

One Size Does Not Fit All

What’s Best?

3 | © 2006 Citrix Systems, Inc.—All rights reserved.

Who Is Cox Communications ?

• Third largest cable company in America with 6.7 million customers and 23,000 employees nationwide

• Full service telecommunication provider• Analog and digital cable• Local and long distance telephone and voice over IP• High speed internet

• Annual revenues exceeding $10 Billion with interests in newspapers, television, radio, and automobile auctions

• Honored by J.D. Powers and Assoc. two consecutive years for outstanding customer service

4 | © 2006 Citrix Systems, Inc.—All rights reserved.

Cox Communications - Drivers

• Create faster, more reliable connections than traditional laptop/VPN solutions

• Create a “work from home” call center solution

• Improve security• Protect Intellectual property• Protect the platform

• Improve overall customer experience

• Create an “end to end”, centrally managed application delivery solution

5 | © 2006 Citrix Systems, Inc.—All rights reserved.

Cox Communications - Solutions

• Leverage in house Metro-Ethernet product to create physically redundant hosting sites

• Two Citrix NetScaler implementations• load balance Citrix sites • Compress and load balance Internal web applications

• Citrix Presentation Server 4 to publish applications

• Virtuozzo to virtualize call center switch software

• Citrix Access Gateway with Advanced Access Control • Increase security through Endpoint Analysis and Access

Rights Control• Extended Web Interface capabilities with Clientless Access

6 | © 2006 Citrix Systems, Inc.—All rights reserved.

Citrix NetScaler for Web Apps

• Implemented for internal IIS applications• Load Balanced applications• TCP optimization• Web Compression • Dynamic Caching• SSL Encryption

SQL 1IIS Web App 1

SQL 4

SQL 3

SQL 2

IIS Web App 2Lo

ad

Bal

anc

ed

Act

ive/

Pas

sive

Primary “Active” Netscaler

Secondary “Passive” Netscaler

Intranet

7 | © 2006 Citrix Systems, Inc.—All rights reserved.

NetScaler & Presentation Server

Data Center 1

`

END USER

NETSCALER #1

Data Center 2 NETSCALER #2

Active/Passive Failover LOAD BALANCE

CITRIX ACCESS GATEWAY #1

CITRIX ACCESS GATEWAY #2

LOAD BALANCE

AAC/WEB INTERFACE #1

AAC/WEB INTERFACE #1

Citrix Presentation Server 4.0

Server Farm

Active/Passive Failover

END POINT SCAN

Internet

Enhanced Site Redundancy and Load Balancing

Improves security and fault tolerance

8 | © 2006 Citrix Systems, Inc.—All rights reserved.

Cox Communication - Benefits

• “Work from Home” program• Complete call center functionality through Citrix• Reduce in house per cubicle cost by $16000 • Improved morale and efficiency of call center representatives

• Streamlined application access• Traditional published applications• Clientless access to web applications (does not require presentation

server license)

• Improved security• Endpoint analysis ensures users access from a clean system

• Results with NetScaler• Citrix infrastructure redundancy• 70% improvement to web application access and speed• More robust load balancing than Microsoft NLB!

9 | © 2006 Citrix Systems, Inc.—All rights reserved.

FIREWALL

HTTPS://INTERNET URL (PORT 443 ONLY)

192.XXX.XXX.X VIP FOR CITRIX ACCESS

GATEWAY

NETSCALER 1

DMZ LAN

UID

1

2

HPProLiantDL360

G5

CITRIX ACCESS GATEWAY 1

LAN

LAN

ADVANCED ACCESS CONTROL SERVER 1

WEB INTERFACE SERVER1

FIREWALL

NETSCALER 2

DMZ LAN

UID

1

2

HPProLiantDL360

G5

CITRIX ACCESS GATEWAY 2

LAN

ACTIVE/PASSIVE FAILOVER MODE

ACTIVE/PASSIVE FAILOVER MODE

LOAD BALANCED VIP FOR ACCESS GATEWAY

DEER VALLEY MSC

Data Center 2

192.xxx.xx.x

ADVANCED ACCESS CONTROL SERVER 2

LOAD BALANCED VIP FOR WEB INTERFACE

192.xxx.xx.x WEB INTERFACE SERVER2

CITRIX PRESENTATION SERVER FARM LOAD BALANCING

PUBLISHED APPLICATIONS AND DESKTOPS

Data Center 1

PRESENTATION SERVERS PRESENTATION SERVERS

10 | © 2006 Citrix Systems, Inc.—All rights reserved.

Q & A

Desktop

Keith Hubbard

Sr. Server AdministratorCox Communications

Chuck Coffman

Sr. Server AdministratorCox Communications